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Cards (22)
Soil
Mechanics
- deals with properties, behavior, and performance of soil.
Soil
- Un-cemented aggregate of mineral grains and decayed organic matter
Behavior of soil under the action of: 1.
Loads
2.
Gravitational
Forces
3.
water
4.
Temperature
Karl
Terzaghi
- a
famous
scientist
defines
soil
mechanics
Geotechnical Engineering
- sub discipline of civil engineering that involves natural materials found close to the surface of the earth
Weathering
- process of breaking down rocks by physical and chemical process into smaller particles
Biological
Weathering
- caused by activities of living organism
Glacial Soil
- Formed by transportation and deposition of glaciers
Alluvial
Soil
- Transported by running water and deposited along streams
Lacustrine
Soil
- Formed by deposition in quiet lakes
Marine Soil
- Formed by deposition in the seas
Aeolian Soil
- Transported and Deposited by wind
Colluvial
Soil
- Formed by movement of soil from its original place by gravity, such as during landslide
AASHTO -
American Association of State Highway and Transportation Officials
ASTM -
American
Society
for
Testing
and
Materials
Rock Cycle
All rock at or near Earth's surface is being modified by the processes of
metamorphism
,
melting
,
crystallization
,
lithification
and
weathering.
Various reasons to study the properties of soil:
Foundation
to
support
Structures
and
Embankments
Construction Material
Slopes
and
Landslides
Earth Retaining Structures
Special Problems
Effects of static loading on soil mass
Shear failure of the foundation soil
Settlement of structures
Stability criteria (Solution)
There
should
be
no
shear failure
of
the
foundation
soil.
The
settlement
should
remain
within
permissible limits.
Firm Soil
Spread
Footing
Soft Soil
Pile
Foundation
Effects of dynamic loading on soil mass
Compaction Characteristics
Moisture Variation